A "sump pump battery backup" can refer to two distinct devices that have a somewhat similar purpose. One is an actual power converter that keeps your sump pump operating when electricity goes out.

However, some sump pumps operate on battery power, making them a good backup option during an extended power outage. There ...

The Town of Stratford is offering its homeowners a rebate of up to $2,000 to upgrade their sump pumps so that the outflow ... which includes a battery backup system for those who participate ...